Life cycle strengthening of high-strength steels by nanosecond laser shock

被引：30

作者：

Bai, Yongtao ^{[1
,3
]}

Wang, Hao ^{[2
]}

Wang, Shuhong ^{[1
]}

Huang, Yihui ^{[4
]}

Chen, Yao ^{[5
,6
]}

Zhang, Wenwu ^{[4
]}

Ostendorf, Andreas

Zhou, Xuhong ^{[1
]}

机构：

[1] Chongqing Univ, Sch Civil Engn, Chongqing 400044, Peoples R China

[2] Ruhr Univ Bochum, Chair Appl Laser Technol, Univ Str 150, D-44801 Bochum, Germany

[3] Leibniz Univ Hannover, Inst Risk & Reliabil, Callinstr 34, D-30167 Hannover, Germany

[4] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China

[5] Southeast Univ, Minist Educ, Key Lab Concrete & Prestressed Concrete Struct, Nanjing 211189, Peoples R China

[6] Southeast Univ, Natl Prestress Engn Res Ctr, Nanjing 211189, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2021年 / 569卷

关键词：

High-strength steel; Laser shock peening; Microhardness; Residual stress; Fatigue life; CORROSION BEHAVIOR; FATIGUE LIFE; ALLOY; MICROSTRUCTURE;

D O I：

10.1016/j.apsusc.2021.151118

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Laser shock peening is a surface treatment technology inducing high-pressure shock waves on metallic materials and structures. In this study, the life cycle performance improvement in high-strength steel by nanosecond laser shock peening is investigated. It is found that microstructures formed by laser shock peening lead to higher microhardness, corrosion resistance, and fatigue life, which are significantly beneficial for preventing life cycle failure of mega-scale engineering structures in critical environments. The residual stress is also measured on the surface of samples, which shows that the compressive residual stress can be found in the treated area.

引用

页数：8

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